GHD was engaged as the lead consultant for the detailed design
of two wetlands, two detention basins, a 93 ML storage dam at
Wilfred Taylor Reserve and approximately 18km of non-potable water
distribution network to harvest 850 ML per annum of stormwater
runoff from the Christie Creek catchment. Our scope included:
- Concept design of wetlands, detention basins, distribution
system and storage dam
- Functional design advice regarding distribution system and
route assessment advice
- Hydraulic modelling and optimisation of water distribution
network
- Detailed design of earthworks, access roads, drainage
structures, 93 ML storage dam, wetlands and detention basins
- Landscaping design and aquatic planting by others
When fully operational the system will harvest 850 ML of
stormwater per annum for reuse; therefore reducing potable water
demand. Prevention of 850 ML of stormwater and associated
contaminants from discharging to the gulf, therefore reducing
adverse impacts on sea grasses and marine species. Reduced flood
risk downstream of detention basins including the Christie Creek
crossing of South Road.
The innovative design included pipeline optimisation that
enabled the project to be constructed within the
client's budget.